Dr. Med. Michael Greger has done several studies on the subject. A short summary:

The choline of the eggs is obviously a very important cause of formation and propagation of the cancer. Poultry are a species of animals with a high content of choline.

Men, who consume only one egg once a week, have 81 per cent of risk of contracting prostate cancer and dying from it.

The choline is also highly concentrated in cancer cells.

http://nutritionfacts.org/video/eggs-choline-and-cancer/?utm_source=NutritionFacts.org&utm_medium=email&utm_campaign=fdde153539-RSS_VIDEO_DAILY&utm_term=0_40f9e497d1-fdde153539-23231505

More info about nutrition on www.provegan.info